The PET bottle blowing machine is divided into two types, rotary type and straight type, according to the conveying mode when the preform is heated. The rotary blow molding machine has high productivity, high speed, complicated design and high price. The typical rotary blow molding machine is the SBO series of SIDEL, France. The SBO24 blow molding machine produces more than 20,000 bottles per hour. At present, China's Tech-Long has also successfully developed a rotary blow molding machine with a production speed of The typical representative of the linear blow molding machine is ASB and AOKI in Japan. Generally speaking, this mechanical design is relatively simple, but the production bottleneck will be difficult to exceed 6000 bottles/hour.
Temperature control is directly related to plasticizing uniformity and is the key to the success of blowing products. The design and precision of the mold and hot runner also determine the quality of the product.
At present, the injection-blowing equipment used in PET bottle production in China is basically the world of imported products, especially in the production of high-speed and large-volume products, domestic equipment can not compete. It is worth mentioning that there are few manufacturers that can produce large-capacity PET hot-fill bottle blowing machines. It seems that only ASB's multiple blowing process has achieved satisfactory results.